Turret-lathe.



No. 657,306. Patented Sept. 4, Yi900. G. C. BARDNS & G. W. BRAKE.

TUBRET LATHE I (Applicatioix filed May B, 1900.) (No Model.) 3 Sheets-Sheet l.

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No. 657,306. Patented Sept. 4, |900. G. C. BARDDNSl & G. W. DRAKE.

TURRET LATHE.

(Application filed May B, 19

3 Sheets Sheet 2.

(No Model.)

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Patented Sept. 4, |900.V GJC. BARDONS & G. W. DBAKE.

TURRET LATHE.

(Applxcatxon filed my B 1900 (No Model.)

3 Sheets-Sheet 3.

NVENT 13H5 @fr-11GB C. BARDONS GEQRGE W. BRAKE. Y

Tie: Noam PETERS cu o, wAsmNa-mn D c UNITED YSTATESv PATENT OFFICE..

I GEORGE C.` BARDONS AND GEORGE W. DRAKE, OF CLEVELAND, OHIO.

l TURRET-LATHE.

"srncrrioafrron forming part of Lettersratent No. 657,306, dated september 4, 1900.

Application led May 8, 1 900.

T0 all whoa/t it may 0071,007'n:

Be it known that we, GEORGE C. BARDoNs Iand GEORGE W.DRAKE,citiZens of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Turret-Lathes; and we do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in turret-lathes; and the invention consists in adjustable stop mechanism operating in connection with the rotating turret-head, as hereinafter described, and more particularly pointed out in the claims.

The object of the invention is toprovide a turret-lathe with adjustable stop mechanism for the turret-slide which will automatically stop the slide in its travel when each tool in the turret-head reaches its work and which will when the next tool in the turret-head is brought in line with the Work set and fix the stop to limit the travel of the slide for that particular tool, each tool having its independent stop operatively connected with the turret-head.

In the accompanying drawings, Figure 1 is a longitudinal section on line l- 1 of Fig.`3 and showing only a broken portion of a lathe with the slide and turret-head mounted thereon. Fig 1a i-s a detail view of the two-partdog-actuating lingers. Fig. 2 is a cross-section and rear elevation looking to the .left from line 2 2, Fig. 1. Fig. 3 is a`plan and sectional view taken on line 3 3 of Fig. l, showing more particularly the eccentric arrangement of the grooves or notches and the relative positions, as seen in plan, of their co operating arms, upon which the stops are mounted. Fig.` iis'a plan sectional View on line 4 4, Fig. l, and showing the operating and locking means for the turret-head. Fig. 5 is a side elevation from the opposite side of the machine, as seen in Fig. l, and shows the means for throwing out the gear connections to stop the turret-slide from further traveling.

A represents the bed or frame of a lathe upon which a turret-slide support Bis mounted, the turret-slide C proper having waysat Serial No. 15,960. (No model.)

each side in which guides 2 on the slide-support B extend. The slide-support B carries the mechanism for actuatingthe slide C back and forth and consists of the cross-shaft D, having the pinion 3 fastened thereon, which meshes with` a rack 4' on the slidel C. Rotation of shaft D is had through either the hand-Wheel E at the left of Fig. 2 or the gear 5 on the end of the shaft at the right. Gear 5 meshes with a worm 6, as seen more clearly in Fig. 5, and this worm is mounted on a 'short shaft, which is driven through pinion 7 at its outer end, meshing with the usual gear and power connections. (Not shown.) The short shaft has its bearings in a hanger 9, which is pivoted at 8 to the slide-support B, and a link 10 is` connected to the outer end of the hanger to hold the worm 6 indengagement with gear 5. The link 10 is held suspended from the inner end of the pivoted latch 11 and is held in this position as long as the Vpin 12 at "the outer end of latch 1l is engaged by a catch-bar 13, which is pivoted to the rear of the support B at 14, and a spring 15, socketed in the rear face of said support,

bears against the bar 13 and keeps the catch` end in engagement with pin l2. Then as the turret-slide is `fed forward by pinion 3 and rack. one of the stop-screws F on slide C (designated by 16 in this instance) comes in contactwith pivoted catch-bar 13 when the slide reaches the extreme forward movement intended for the Working tool in turret-head G and presses the bar end inward and releases pin 12, which allows the inner end of latch 11 to drop by gravity through the connected Weight of the hanger 9` and worm 6, and the worm is thus freed and disconnected from gear 5, thus cutting othe power and stopping the further forward movement of slide C. The stopping operation as outlined is identical for all the stops; but only one screw F at a time is brought into play at each forward movement of slide C, the others re` maining at the higher elevation, which miss striking the bar 13 after the single stop-bolt to be used has been selected and caused to drop to a line parallel With bar 13. The selection and dropping of any single stop-screw is governed by the rotation of turret-head G and is dependent on the position of the tool roo t turret-head Gis ipr'ovided withopenings I"in its periphery, in which the roughing,"shap ing, finishing, or other tools are fastened and slide() comeincontact with the revolving openings are shown in the turret-head G, al-

though more or .less can be had, if l desired-,

and are, for the sakeof comparison,"inten`d'ed to represent each as carrying a tool, althoughnone are shown. MEach ytool inV its opening, has a corresponding stop-screwF and oper` actuated and itsstopscrew'F isdroppe'd into The turret-head;

position to engage'rbar 13. G'is k.supported upon the `top -facel of slide C and is rotated on verticaliI shaft 1'7fand is op-: erated bythe ratchet-wheel 19 at its l-lowerf end within slideC. Rotation is imparted-tio the ratchet-Wheel 19 when Athe -slide C is travarm 21, fixed `to frame A, coming-in. contact 1 with thel ratchet vand in this instancegving a one-sixth turn to the turretLhead. hen:v the turret-head hasV been. rotated to; position,

a stopLscreW-carrying lever F is actuated, each of said levers F' having anengaging pin;

t 22, which rides and interlocks findanotchor groove23, made inthe bottom face of the'turret-head, and each vvpinf22-hasfits.fmvrimoteh v 23 to match with itand with none of theth-r` ers'. The levers F are pivoted` within slide .Ci

`upon a common cross-shaft 24,1ocatedwratg about one-thirdltheylength ofthe arms fromi the pins 22, andthe-,extreme fend of 'the -lonlgerlg part ofthe levers l'engage notchesin vthe-vertical sliding l barsFg-onelfor each t .lever F" the lever F'v downand'theshortendsuppolt;l

pies its groove 23. 4V-Norxnallyonlyoneoftheseg levers F isz inv4 this; position ,--the :ther'sgbeifng held in the -positionrequired to lift the bal.l

lowed to occupy Va Vnotch-23 when :fthe turrets is rotated to bring a new toolinto-action =an`d a new adj usted stop-screwF- vvto stoppingg po sition,v the notches 42311are arrangedinA aurea:

centric vor--spiral line in l the bottom faceoff,

' arey set to one side oi'rthe axiali line of fthei turretfheadfG landl ithe longitudinal center--fof the slide'O andare-arranged sotthat asthej turret is rotated. and :each-successive.@.notch each one-sixth revolution will fall in the notchespecially designedtoieceive it: 'This droppinin :occurs whe'nithe' toch opening in thefaceof the turretlh'eafd cornes'to working position at the front end ofslide C. Each :'nth23' is grooved in the circular form, as

seen more qlearlyin. thehroken-weynortion Aclog the action and prevent the pins 'from 7.Working freely, and .all :parts arehidden and covered from 4above 'for"fnrther protection. A"Asaifurtherimprovement alongthis line the Nlockingfbolt H, which Works inl connection with the othe-rsturretmechanism, i's'brught underneath f fthefturret-head and -inclosed Withinthe slide C, and a circulariange' .26', having notches 27, depends frornthef bottoni ofL head G,and `these notchesfare of the same nu niber f assi-the Utool-openings in the turret.

Beforethef-turret `isfree;to revolve, boltH mustibe withdrawn from-the notch inthe ring cling back by reason of `the post-2O on athe.

or; flange 26,.,Yfand-.this is done Whentthe` 'slide Citravelsfback zand the lower Dsection L283 of the pivoted-dog-actuatingfinger 29 :strikes v gers 29 working in the slot 310i?y theaboltfand forcing thefsame inward ou-t of `the notch.V A spring/32;socketedf inthe slide l@bears against ai-lug -on bolt Hz-and serves tolthrowrthersame back in the notch whenlthellower'sectionn28 isre'leased l from `f contact with.- rib `30 i bythe traveLrof'fslideC. .illtwill be noticed f-t'hat the bolt 1H in locking works from 'the oentervof the turretshaft outward orgagainstf the inner acezof'f fiange 26',- 4andthisrarrangementi p er-l mits of` the .operation ofthesezpartsr ina very s maIlgiVen space and, furthermore, protects thess'ame from all .-.possible fh'arm or :disar- .rangementI from the 1. outsideyrasiwell as'rgivinjgI ra "lmone i finish-ed f appearance. to '.the @maf chine as a Whole. l Y y -Tfhe latch=11fis'fsupported.:onsthe end vof a ferossl'shaft 33,:an'd can rbe Yactuatedwto ,raise the: hanfger a bysineans olithe lever :34 :onilthe `Qppo1site .fend...ofthe shaft vat: thefleft of (the machine.' i Catchbar 13"'fals'o has aha-ndle atzfthis -side to 'release the .latchgandfzthrcw 0E the? powerfby :disconnecting gearsf' `and 6 independentlyof the'i'stopE-screws'rF. o x jfl An ianportantfadvantagegained` :byithis im provenienti-is that each :tooli-ntheturrethead vcan bemadehto come .i-ntof'contact f'withthe IOO workaat` anyfpredeterminedpointfbymerely 1 adjusting the stopascrewFrrepresenting-that tool, mhiclrwillcause the slide vGto stopfwhere Y desiredethat isstosay, the travelsrofslide- C can? be Vlimited or extended forveachfftool; or,

infothenwords, ythe slidepcan be made totravel #1, Ingafftup'rretslathe; aturretheadandithe slidetherefor;motchesfeccentrically:arranged int-the :bottomrface fofrsaid z head,.rfadjustable stopsiforisaid ..-.-sl\ide, levers i for each efcsaid stops operatively engaged by said notches,

'means lto operate said head and slide, and means to stop the travel of said slide by one of said stops, substantially as described.

2. In a tu rret-lathe, the turret-head and the eccentricallyarranged notches therein, the turret-slide and the levers and stops carried on said slide, means to rotate said tu rret-head and operate said slide, and mechanism to throw off the power by means of one of said stops and notches, substantially as described.

3. In a turret-lathe, a turret-head and a sliding support therefor, a seriesof notches eccentrically arranged in the bottom face of Y limit the movement of said slide-support, and

means to rotate said head and operate said sliding support, substantially as described.

5. In a turret-lathe, a rotatable-turret-head and a supporting-slide' therefor, a circular de= pending iange at the bottom of said head having notches therein,a sliding bolt mounted in said slide and having a spring to press said bolt into said notches from the inner side of said flanges, and a linger pivoted on said slide to engage both the frame of the lathe and the bolt to release said bolt from the notches, substantially as described.

6. In a turret-lathe, a rotatable turret-head, and a supporting-slide therefor, a circular depending and notched fiange at the bottom and a series of notches or grooves arranged eccenL trically and spirally in the bottom of said head, a locking-bolt having unlockingngers for said notched ange, a series of pivoted le`- vers supporting adjustable stops at one end and engaging members for said grooves at the other end, means to rotate said head, and mechanismto operate said slide having throw= o connections engaged by said stops, sub= stantially as described Witness our hands to the foregoing specication this 27th day of April, 1900.

, GEORGE C. BARDONS. GEORGE W. DRAKE. Witnesses:

H. E. MUDRA, R. B. MOSER. 

